using to_database for filter values

cqlengine/query.py

@@ -493,7 +493,7 @@ class AbstractQuerySet(object):
             operator_class = BaseWhereOperator.get_operator(col_op or 'EQ')
             operator = operator_class()
 
-            clone._where.append(WhereClause(col_name, operator, val))
+            clone._where.append(WhereClause(col_name, operator, column.to_database(val)))
 
         return clone
 

cqlengine/tests/query/test_datetime_queries.py

@@ -43,7 +43,7 @@ class TestDateTimeQueries(BaseCassEngTestCase):
         end = start + timedelta(days=3)
 
         results = DateTimeQueryTestModel.filter(user=0, day__gte=start, day__lt=end)
-        assert  len(results) == 3
+        assert len(results) == 3
 
     def test_datetime_precision(self):
         """ Tests that millisecond resolution is preserved when saving datetime objects """